期刊
NANOTECHNOLOGY
卷 31, 期 9, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/ab5609
关键词
electrocatalyst composite support; MXene; direct methanol fuel cells; synergistic effect
资金
- National Natural Science Foundation of China [21606064, 11774077]
- Joint Funds of the Equipment pre-research and Ministry of Education of China [6141A02033218]
- Fundamental Research Funds for the Central Universities [JZ2018HGTB0252, PA2018GDQT0021]
A key challenge in developing direct methanol fuel cells is the fabrication of electrocatalysts with high activity and long durability. Herein, we report a performance enhanced electrocatalyst of nanoscale Pd on MXene (Ti3C2Tx) and reduced graphene oxide (rGO). The mass activity of Pd/Ti3C2Tx-rGO (1: 1) hybrid toward methanol oxidation reaction is 753 mA mg(-1), which is 1.7 times than that of Pd/C (446 mA mg(-1)). Additionally, the current density of Pd/Ti3C2Tx-rGO (1:1) catalyst contains 212 mAmg(-1) which is nine times higher than that of Pd/C (23 mA mg(-1)) after 7200 s. The Pd/Ti3C2Tx-rGO (1:1) catalyst exhibits excellent cycling stability and long-term life. These remarkable catalytic performances are attributed to the role of Ti3C2Tx and rGO in enhancing the catalytic activity surface area and rapid mass/charge transfer due to the synergistic effect between Pd and Ti3C2Tx/rGO.
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